James smith



(No Model.)

J SMITH Hod Elevator.

Paten ted Apri l 5,1881.

ATTORNEYS.

N. PETERS. PHOTO'LITHOGRAPNEBI WASHINGTON, D. C.

FFIC

7 JAMES SMITH, OF PHILADELPHIA, PENNSYLVANIA.

HOD-ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 239,866, dated April 5, 1881.

Application filed February 8, 1881. (No model.)

To all whom it may concern:

Be it known that '1, JAMES SMITH, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and Improved Hod-Elevator, of which the following is a full, clear, and exact description.

My improvements relate to apparatus for elevating bricks and mortar in hods; and-the invention consists in certain novel features of construction for rendering the operation more perfect, and in a safety-stop for preventing the hods from being carried over the upper wheels.

In the accompanying drawings, Figure 1 is a front view of an elevator of the improved construction. Fig. 2 is a vertical section on line w at, Fig. 1. Fig. 3 is a detail view, showing the brace connections. Fig. 4 is a detail section of the chain. Fig. 5 is a detail section on line y y of Fig. 2, and Figs. 6 and 7 are detail views.

Similar letters of reference sponding parts.

A is the lower frame or stand, carrying ch ainwheels at a, to which the power is applied; and B is the upper frame, carrying chain-wheels b b. It will be understood that the frame B will rest on the floor-beams and will be raised from time to time as the building progresses, the chains being at the same time lengthened to correspond.

The lower frame, A, consists of sill-pieces c c and standards at d, that are fixed on the sillpieces and stiffened by side braces, c c, which sustain the standards against the side strain caused by the driving-belt. The standards at are slotted lengthwise to receive the pins or tenons of castings e that are formed with boxes 6 e, in which the cross-shafts f f are sustained. The shaft f carries chain-wheels a a, and also a large gear-wheehf that is engaged by a pinion, e", on shaft f, and shaft f alsocarries a chain-wheel, 0 to which power will be applied by a chain-belt. The castings e are reindicate corretained by bolts extending through the slotsand provided with nuts and washers taking on the standards, so thatthecastings may be clamped to place as adjusted. From the upper ends of these castings racks g extend upward, and a cross-shaft, g, journaled in the standard, carries pinions g that engage with the racks 9. On shaft 9 is a hand-wheel for use in turning the shaft and thus raising and lowering the castings c. This construction permits the chains of the elevator to be readily tightened. The chain-wheels a, also the upper wheels, I), have their peripheries formed with bevel-sided grooves, and are formed at the bottom of the grooves with pins for engaging the chains.

The upper frame, B, is constructed substantially the same as the lower frame. h h are sill-pieces, supporting standards '5 '5, that are braced by side braces, h, and on the upper ends of the standards half-boxes 'i' are fitted for receiving a shaft, 76, that carries the chainwheels b. Hare braces extending from one standard 2' to the other, to prevent them from spreading. The ends of these braces are formed with T-flanges (see Fig. 3) that enter socketpieces 1 attached to standards 2', so that the braces can be readily removed. This construction of the upper frame, by which the standards, braces Z, and shaft can be readily separated and put together agaimis for convenience in raising the frame from time to time as the building progresses.

The chain-wheels a, a b I) carry two endless chains, m m, which are fitted with the hodsupporters, placed at suitable intervals. As shown most clearly in Fig. 4, the links of the chain consist, mainly, of flat plates connected at their ends by hooks and bolts with solid links 0 interposed at intervals. The solid links 0 are formed with under-cut recesses, into which the bars n of the bod-carriers enter, and bolts passing through the bars and links hold the parts firmly, so that the bod-carriers are sustained by the two chains.

The bod-carriers consist of V-shaped arms or flanges n on the bars a, of a shape for receivin g the hods represented at p. The flanges n are vertical during the passage of the chains up and down, and, as shown, are double, so that one side can be used for elevating and the other side for receiving the hods to carry them down. The flanges n are also formed with side lugs, 12, on which the body of the hods will rest, so that they will be held squarely with their handles extending straight down. This prevents the handles from becoming caught.

Upon the upper frame, B, is hung a lever,

q, having a latch-arm, q, and beneath this is hung a lever, 1", one end of which rests normally on the latch-arm q, so as to be sustained thereby, while to the other end of lever r is connected a rod, 8, that will pass to the cut-off lever of the engine which drives the elevator. A weight, r, is suspended from lever r in a manner to pull down the lever and raise rod 8 when the lever is released by the latch. In this normal position of the parts the lever q extends in front of the chains and in the path of the hods, so as to be struck thereby when the hods reach the chain-wheels b. If a hod is not removed by the attendant it will thus raise lever q and trip-lever r, and the rod 8 being then raised by the weight 1", the engine will be stopped. The hods are thus prevented from being carried over the chain-wheels.

By the use of chains and chain-wheels, as described, the hod-carriers are retained level as the chains cannot slip, and they may be readily tightened, as required. By using double chains, with the carrier between them, the hods cannot become caught and broken.

If the chain-belt is loosened by the tightening of the elevator-chains the operation of the machine will not be stopped thereby, as would be the case if a common belt was used.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In bod-elevators, the bod-supporters, consisting of the bars it, having V-sbaped flanges H in combination with the two traveling endless chains m, having recessed links that receive bars n, substantially as and for the purpose specified.

2. In hod-elevators, the slotted standards d, castings 6, formed with boxes 0 e, racks g, pinions g shaft g, chain-wheel shaft f, and driving-shaftf, combined for operation substantially as shown and described.

3. In hod-elevators, the shaft 9, pinions 9 I JAMES SMlTH.

Witnesses:

J AOOB A. SOHANDEIN, WM. O. WIMER. 

